Railway-frog.



No. 869,695. PATENTED OCT. 29. 1907. T. F. DONAHUE. RAILWAY PROG.

APPLIOATION FILED AUG. 1, 1907.

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PATENTED 001229.41907.

T. F. DONAHUE. RAILWAY PROG.

APPLIoATIoN FILED AUG. 1. 1907.

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TI-IOMAS F. DONAHOE, OF PITTSBURG, PENNSYLVANIA.

RAILWAY-FBO G.

Speeication of Letters Patent.

Patented Oet. 29, 1907.

Application filed August 1| 1907- Serial No. 386.617.

To all whom it may concern:

Be it known that I, THOMAS F. DoNAHoE, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Railway-Frogs, of which the followingr is a specilication, reference being had therein to the accompanying drawing.

This invention relates to railway frogs, and the invention has for its object to provide reversible rails and points for stiffV frogs, permitting of the rails being rearranged and the points inverted, when worn by rolling stock passing over the same.

It is a well known fact that certain parts of the rails of a frog, particularly the rails forming the wings of the frog are subject to considerable wear by the tread of wheels, passing over saine. This is also true of points of frogs, the points wear as the wing gets low, and heretofore, it has been necessary to construct new wings or discard the frogs that have become worn to that extent as to cause a derailment or injury to rolling stock.

My invention aims to obviate the discarding of frogs on account of injured wings and points, and to construct the saine whereby they can be changed, and made to serve twice the period of time as ordinary frogs.

The detail construction entering into my invention will be presently described, and then specifically pointed out in the appended claims.

In the drawings, Figure l is a plan of a frog constructed in accordance with my invention, showing similar angles on each end of wings, Fig. 2 is a horizontal sectional view of the same, FigA 3 is an enlarged cross Asectional view of the frog taken on the line III- III of Fig. l, Fig. 4 is a perspective view of an invertible point, Fig. 5 is a sectional view of a point made solid with the filler block so that point and filler would both be invertible, this part of filler to be made the same length as the invertible point, and Fig. (i is a perspective view of a filler plate for invertible points.

To put my invention into practice, I construct a frog of two wing rails I and 2, constituting the wings of a frog. In connection with these rails, I use heel rails 5, and heel blocks 5l and a point 6, these parts being secured together by fastenings, generally bolts 7, said bolts passing through the web portions of said elements. Foot guards 9 are used, these guards together with the filler blocks and heel rails being common to the present type of railway frog. 'lhe rails ,l and 2 are constructed and bent with similar angles, whereby when thetops of the rails l and 2 constituting the wing of the frog, have become worn at the point, these rails can be reversed and transposed, tbe rail l turned end for end being used where the rail 2 was originallyused and rail 2 turned end for end in the position originally occupied by rail I, 'lhis bas been impossible heretofore due principally to the angularity of the rails l and 2, also owing to the fact that said rails were not of a proper length.

he point (i of the frog, Fig` Ll, is made without a base or especially designed head, the top and bottom of the point being identical in construction, whereby when the top of the point has become worn, said point can be inverted and what was then thelower surface thereof used as the top of the point. This point can also be made solid with filler blocks, as per Fig. 5, then by inverting the tiller, the point would be thesame as Filler plates l() can be used to brace and form a foundation for the invertible points of a frog.

It will be apparent to track supervisors and those familiar with the construction and maintenance of stiff frogs, that I have devised a frog that-will last twice the life of ordinary frogs, thus reducing the expense of track maintenance, besides, insuring greater safety of rolling stock.

Having fully described my invention, what I claim and desire to secure by Letters Patent, isz# 1. A frog consisting ot' elongated wing,r rails of similar nngulnrity and :in invertible point. said rails and point being suitably connected together.

2. A\ frog consisting ot' interchangeable elongated wing rails having similar angularity, an invertible point, and means for securing said rails and point together.

it. A frog consisting ot' elongated wingr rails havingr similar angles adapting said rails to be interclianged, and

, an invertible point.

L frog.;- consisting of' elongated and intercliangeable wing rails, :in invert'ible point, and tiller blocks between the lower face of the invertible point and base of the wing rails.

ln testimony whereof I nilix my signature in the presence ot' two witnesses.

THOMAS F. DONAHOE.

Witnesses MAX II. Snomvi'rz,

A. .T. '.lmeo. 

